For example, wafer-thin is light and largely well damped, but not stiff; hardware can be made stiff and light, but it is not mainly well damped; plastic can be light, but conventionally the stiffer IPOD Speaker System it is made, the less well-damped it is. As a result, many cones are made of some sort of composite material. This can be a matrix of fibers including Kevlar or fiberglass, a layered or bonded sandwich construction, or simply a coating applied to stiffen or damp a cone.

A onliest driver is less invaluable than several, and there is no longing for a crossover network, further reducing cost. Human auditory range is able to tolerate listening to a reduced bandwidth, and upper harmonic synthesis can be acclimated to 'fill in' missing bass tones that the driver is too mini to usefully reproduce.